New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1887-05-21
MAKING FOUL WATER FIT TO DRINK.

SYSTEM NOW IN USE IN FIFTEEN TOWNH
Great advances have recently been made in the
methods OF artncay preparing river water for drink
ing and manufacturing purposes, and the efforts to
obtain cheap means OF filtration adapted tor use
upon large scale have led to marked improvements
In altering machinery. The chemical substances used
to from water those impurities which render It
dangerous to health practically identical in all
processes The, the substances which found In
natures own method. Bet the appliances for their
operation differ materially. method has recently
been devised called the Hyatt pure water system. "
IL takes its from its inventor who Is also the
Inventor OF ceuloid and 1t is owned and operated by
the Newark Fiftering Company whose Offices are in
rHE tribune Building. The water supply OF Fifteen
towns and cities passes through this filter Those aow
using 1t are Charleston, w va someryille and Rari-
tan " j.. Rich Hill, NO., Bellevillc H., Eau Claire
Wis, Tunkhannock PENN Atlanta, Ga. Chillicothe
Mo-. Beatrice aud Nebraska City, Nob Raleigh, n c.,
Huntington, W. Va, Bucyrus, Ohio, and Wichita,
Kan.
Three separate devices are employed by which 10
free tho water from obnoxious substances either In
solution or in suspension The first - coagulaton. by
which the impurities made to collect together IN
adhcrng particles. Alum IA tho most gener ally used
coaxuant. hut under certain conditions limo ana iron
are employed with the same end In view. The second
process IL filtration and the third IA aeratiou. Cen
orally the filters are provided with all three of these
departments. After the water has been subjected 10
one OF them IL passed through the others and when
IL finally Issues IL Ia In condition of sparkling purity
The filters made OF all sizes from ten-inoh house
filter TO a thrty-toot machine designed for city use
With discharging capacity OF 100000 gallons a
day. The larger cylinders are provided with self
acting washing apparatus by which they can be thor
oushiy cleansed ia half mn hour.
Tho inlet valve placed at about the centre OF the
cylinder which Is divided at that point by heavy
plato. The water Is introduced under this plate and
IL IL extremely dirty II Ia charged with about three
fiths OF a grain OF alum to every gallon of water
Thus Affected II passes Into the fltering material
usually graduated coke and lime. IL slowly perc olaes
through several feet of this substance At the bottom
of the cylinder coneshaped valves attached 10 an
escape pipe The water in its purified condition passes
through these and escapes into whatever reservoir ia
prepared toi its reception II has thus far been sub
jccted only TO the processes OF coaguation and fl
traton. Inc alum serves TO attract particles In suspen
sion and hold them together In atoms sufficiently large
tor the coke and lime to dctan thcm while the water
passes through. Ii the water Is still impure IL Ia sub
which undcr heavy pressure IL Is surcnarged with
oxygen tho effect OF tho gas being defertilize any
organic germs that may lie in solution. This Is done
while tho water IA passing In rapid action through
layers of sand and coke and pebbles which detain the
sediment.
1t Is claimed that there Is no necessary lm. to the
capacity application of this system and that Ii IL
pied to sll situations and MI conditions where II Ia
necessary to extract pure water from polluted
The machinery 10 ample. Ia ten-foot filter, the
capacity OF which il $50 gallons minute 302 bushels
OF altering material used After the da,s supply
has been provided the sediment necessarily renders
the coke and lime 1lthy 1t ia then washed by closing
tho nc and outlet pipes and opening the valves ut
the top OF the filter. The inlet and outlet pipes
connected and water ia passed into She filter at the
bottom. IL up through tho coke and lime, loosen
ing tt cir particles and pressing them upward through
several discharge pipes into the upper compartment of
the cylinder which Is always tul OF pure water This
water completes the cleansing process and the ering
material settles again Into the bottom OF tho tank |
whllo the refuse is conducted off, The cost OF
machine Is about $40 900 per million gallons filtered
daily. It's features consist OF the system OF pipes
and valves by which the water Ia carried through the
Offering material and by which that substance Is |
carriel into tho upper tank during inc cleansing
process.